# 2012 United States House of Representatives elections in Illinois

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vte :
The 2012 United States House of Representatives elections in Illinois were held on Tuesday, November 6, 2012, to elect the 18 U.S. representatives from the state, one from each of the state's 18 congressional districts, a loss of one seat following the 2010 United States census. The elections coincided with the elections of other federal and state offices, including a quadrennial presidential election. Primary elections were held on March 20, 2012.
Republicans struggled after a strong showing in 2010, losing a total of five seats, one via redistricting, and four via loses by incumbents. Joe Walsh, Bob Dold, Judy Biggert, and Bobby Schilling were all defeated in their bids for re-election. Walsh, Dold, and Schilling had all been elected during the wave year of 2010.

## Redistricting

A redistricting bill was introduced to the Illinois General Assembly by members of the Democratic Party in May 2011. Although Representatives are not required to live within their districts, the new map drew the homes of at least five Republican incumbents into districts where they would have to run against other Republicans, and others into districts which strongly favor Democrats.
After an amendment which modified the 13th and 15th districts was passed with Republican support, the new map was passed by the Illinois House of Representatives on May 30, 2011 and the Senate on May 31. Governor Pat Quinn, a Democrat, signed the map into law on June 24. Republican members of the congressional delegation planned to mount a legal challenge.

## Overview

United States House of Representatives elections in Illinois, 2012 :
| Party | Party | Votes | Percentage | Seats before | Seats after | +/– |
| | Democratic | 2,799,570 | 57.07% | 8 | 12 | +4 |
| | Republican | 2,002,848 | 40.83% | 11 | 6 | -5 |
| | Others | 102,826 | 2.16% | 0 | 0 | - |
| Totals | Totals | 4,905,244 | 100.00% | 19 | 18 | -1 |

## District 1

The 1st district, which had been represented by Democrat Bobby Rush since 1993, had seen a decline in population and so now extends into the Chicago suburbs and rural areas of Will County.

### Democratic primary
#### Candidates
##### Nominee

* Bobby Rush, incumbent U.S. Representative

##### Eliminated in primary

* Harold Bailey
* Raymond Lodato, lecturer in public policy at the University of Chicago
* Clifford Russell Jr., police officer
* Jordan Sims, political commentator for an online newspaper
* Fred Smith, program director for a youth care agency

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bobby Rush (incumbent) | 64,533 | 83.9 |
| | Democratic | Raymond Lodato | 3,210 | 4.2 |
| | Democratic | Harold Bailey | 2,598 | 3.4 |
| | Democratic | Clifford Russell, Jr. | 2,412 | 3.1 |
| | Democratic | Fred Smith | 2,232 | 2.9 |
| | Democratic | Jordan Sims | 1,980 | 2.6 |
| Total votes | Total votes | Total votes | 76,965 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Donald Peloquin, Mayor of Blue Island

##### Eliminated in primary

* Frederick Collins, police officer and 2010 candidate for Cook County Sheriff
* Jimmy Lee Tillman II, producer

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Donald Peloquin | 16,355 | 69.2 |
| | Republican | Frederick Collins | 5,773 | 24.4 |
| | Republican | Jimmy Lee Tillman II | 1,501 | 6.4 |
| Total votes | Total votes | Total votes | 23,629 | 100.0 |

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Humane Society of the United States
* Planned Parenthood Action Fund
* Sierra Club
Newspapers
* Chicago Tribune

#### Results

Illinois's 1st congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bobby Rush (incumbent) | 236,854 | 73.8 |
| | Republican | Donald Peloquin | 83,989 | 26.2 |
| | Independent | John Hawkins (write-in) | 1 | 0.0 |
| Total votes | Total votes | Total votes | 320,844 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 2

The new 2nd district stretches from Kankakee County, through Will County and to Chicago. Democrat Jesse Jackson, Jr., who had represented the 2nd district since 1999, sought re-election.

### Democratic primary
#### Candidates
##### Nominee

* Jesse Jackson Jr., incumbent U.S. Representative

##### Eliminated in primary

* Debbie Halvorson, former U.S. Representative

#### Endorsements

Newspapers
* Chicago Tribune

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Jesse Jackson, Jr. | Debbie Halvorson | Undecided |
| We Ask America | February 21, 2012 | 1,294 | ± 2.7% | 54% | 32% | 14% |

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jesse Jackson, Jr. (incumbent) | 56,109 | 71.2 |
| | Democratic | Debbie Halvorson | 22,672 | 28.8 |
| Total votes | Total votes | Total votes | 78,781 | 100.0 |

### Republican primary

Republican Adam Kinzinger, who was first elected to represent the 11th district in 2010 and now lives in the 2nd district, sought re-election in the 16th district.

#### Candidates
##### Nominee

* Brian Woodworth, associate professor at Olivet Nazarene University

##### Eliminated in primary

* James Taylor Sr., newspaper publisher

##### Declined

* Adam Kinzinger, incumbent U.S. Representative for the 11th district

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Brian Woodworth | 11,123 | 63.7 |
| | Republican | James Taylor, Sr. | 6,347 | 36.3 |
| Total votes | Total votes | Total votes | 17,470 | 100.0 |

### Independents

* Marcus Lewis, postal worker

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* National Education Association
* United Steelworkers
Organizations
* Humane Society of the United States
* Planned Parenthood Action Fund
* Sierra Club

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Jesse Jackson, Jr. (D) | Brian Woodworth (R) | Marcus Lewis (I) | Undecided |
| We Ask America | October 21, 2012 | 819 | ± 3.5% | 58% | 27% | 15% | — |

#### Results

Illinois's 2nd congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jesse Jackson, Jr. (incumbent) | 188,303 | 63.3 |
| | Republican | Brian Woodworth | 69,115 | 23.2 |
| | Independent | Marcus Lewis | 40,006 | 13.4 |
| | Independent | Anthony W. Williams (write-in) | 288 | 0.1 |
| Total votes | Total votes | Total votes | 297,712 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Aftermath

Jesse Jackson, Jr. resigned his seat in the 112th Congress on November 21, 2012, and also resigned his seat in the 113th Congress on the same day. As a result, no one was seated in the 113th Congress for the 2nd congressional district, and a special election was called for April, 2013, to fill the vacancy.

## District 3

The 3rd district, which had been represented by Democrat Dan Lipinski since 2005, now extends to Bridgeport, Chicago and Lockport, Will County. Lipinski sought re-election.

### Democratic primary

Insurance executive and health care activist John Atkinson was expected to challenge incumbent Lipinski, and raised over $535,000 in the first quarter of 2011, but no longer lives in Lipinski's district. Atkinson had considered instead running in the 11th district, but suspended his campaign on June 14, 2011.

#### Candidates
##### Nominee

* Dan Lipinski, incumbent U.S. Representative

##### Eliminated in primary

* Farah Baqai, police officer

##### Withdrawn

* John Atkinson, Insurance executive and health care activist

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dan Lipinski (incumbent) | 44,532 | 87.3 |
| | Democratic | Farah Baqai | 6,463 | 12.7 |
| Total votes | Total votes | Total votes | 50,995 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Richard Grabowski, manufacturing company supervisor

##### Eliminated in primary

* Jim Falvey, attorney
* Arthur J. Jones, insurance sales representative

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Richard Grabowski | 20,895 | 59.3 |
| | Republican | Jim Falvey | 10,449 | 29.7 |
| | Republican | Arthur J. Jones | 3,861 | 11.0 |
| Total votes | Total votes | Total votes | 35,205 | 100.0 |

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Humane Society of the United States
* Sierra Club
Newspapers
* Chicago Tribune

#### Results

Illinois's 3rd congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dan Lipinski (incumbent) | 168,738 | 68.5 |
| | Republican | Richard Grabowski | 77,653 | 31.5 |
| | Independent | Laura Anderson (write-in) | 7 | 0.0 |
| Total votes | Total votes | Total votes | 246,398 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 4

The 4th district, which had been represented by Democrat Luis Gutiérrez since 1993, was extended to incorporate Gutiérrez's new home in Portage Park.

### Democratic primary
#### Candidates
##### Nominee

* Luis Gutiérrez, incumbent U.S. Representative

##### Eliminated in primary

* Jorge Zavala, teacher with the City Colleges of Chicago

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Luis Gutiérrez (incumbent) | 30,908 | 100.0 |
| | Democratic | Jorge Zavala (write-in) | 6 | 0.0 |
| Total votes | Total votes | Total votes | 30,914 | 100.0 |

### Republican primary

Héctor Concepción, a former director of the Puerto Rican chamber of commerce, had been removed from the ballot by the Illinois Board of Elections in January 2012, but since refiled and challenged Gutiérrez as the Republican nominee in the general election.

#### Candidates
##### Nominee

* Héctor Concepción, former director of the Puerto Rican chamber of commerce

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Héctor Concepción (write-in) | 10 | 100.0 |

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Humane Society of the United States
* National Organization for Women
* Planned Parenthood Action Fund
* Sierra Club

#### Results

Illinois's 4th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Luis Gutiérrez (incumbent) | 133,226 | 83.0 |
| | Republican | Héctor Concepción | 27,279 | 17.0 |
| | Independent | Ymelda Viramontes | 4 | 0.0 |
| Total votes | Total votes | Total votes | 160,509 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 5

The 5th district, which had been represented by Democrat Mike Quigley since 2009, was redrawn to include Franklin Park, Elmwood Park, Hinsdale, Oak Brook, River Grove, Schiller Park and parts of Melrose Park, Stone Park and the North Side of Chicago. Quigley sought re-election.

### Democratic primary
#### Candidates
##### Nominee

* Mike Quigley, incumbent U.S. Representative

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Quigley (incumbent) | 37,967 | 100.0 |
| Total votes | Total votes | Total votes | 37,967 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Dan Schmitt, self-employed

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Dan Schmitt | 23,940 | 100.0 |
| Total votes | Total votes | Total votes | 23,940 | 100.0 |

### Green primary
#### Candidates
##### Nominee

* Nancy Wade, community activist

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Humane Society of the United States
* NARAL Pro-Choice America
* Planned Parenthood Action Fund
* Sierra Club
Newspapers
* Chicago Tribune

#### Results

Illinois's 5th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Quigley (incumbent) | 177,729 | 65.7 |
| | Republican | Dan Schmitt | 77,289 | 28.6 |
| | Green | Nancy Wade | 15,359 | 5.7 |
| Total votes | Total votes | Total votes | 270,377 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 6

The 6th district, which had been represented by Republican Peter Roskam since 2007, is one of two districts which were expected to remain strongly favorable to Republicans, although it has been redrawn to include Algonquin, Barrington, Cary, Downers Grove, Glen Ellyn, Lake in the Hills, Lake Zurich, Palatine, South Elgin, West Chicago, Westmont and Wheaton.

### Republican primary
#### Candidates
##### Nominee

* Peter Roskam, incumbent U.S. Representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Peter Roskam (incumbent) | 76,146 | 100.0 |
| Total votes | Total votes | Total votes | 76,146 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Leslie Coolidge, certified public accountant and former partner at KPMG

##### Eliminated in primary

* Geoffrey Petzel, small business owner
* Maureen E. Yates, retired businesswoman

##### Disqualified

* Tim Ritter, graduate student at the University of Illinois at Chicago

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Leslie Coolidge | 9,919 | 54.5 |
| | Democratic | Maureen Yates | 5,934 | 32.6 |
| | Democratic | Geoffrey Petzel | 2,343 | 12.9 |
| Total votes | Total votes | Total votes | 18,196 | 100.0 |

### Independents

Khizar Jafri, a traffic analyst, ran as an Independent.

### General election
#### Endorsements

Organizations
* Campaign for Working Families
* Humane Society of the United States
* National Right to Life Committee
* NRA Political Victory Fund
* United States Chamber of Commerce
Newspapers
* Chicago Tribune
Labor unions
* AFL-CIO
* United Steelworkers
Organizations
* Democracy for America
* National Organization for Women
* Planned Parenthood Action Fund
* Sierra Club

#### Results

Illinois's 6th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | Peter Roskam (incumbent) | 193,138 | 59.2 |
| | Democratic | Leslie Coolidge | 132,991 | 40.8 |
| Total votes | Total votes | Total votes | 326,129 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 7

The 7th district, which had been represented by Democrat Danny K. Davis since 1997, was redrawn to include parts of LaGrange Park and Westchester. Davis sought re-election.

### Democratic primary
#### Candidates
##### Nominee

* Danny Davis, incumbent U.S. Representative

##### Eliminated in primary

* Jacques A. Conway, pastor and retired police officer

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Danny Davis (incumbent) | 57,896 | 84.5 |
| | Democratic | Jacques Conway | 10,638 | 15.5 |
| Total votes | Total votes | Total votes | 68,534 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Rita Zak

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Humane Society of the United States
* J Street
* National Organization for Women
* Planned Parenthood Action Fund
* Sierra Club
Newspapers
* Chicago Tribune

#### Results

Illinois's 7th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Danny K. Davis (incumbent) | 242,439 | 84.6 |
| | Republican | Rita Zak | 31,466 | 11.0 |
| | Independent | John Monaghan | 12,523 | 4.4 |
| | Independent | Phil Collins (write-in) | 5 | 0.0 |
| | Independent | Dennis Richter (write-in) | 2 | 0.0 |
| Total votes | Total votes | Total votes | 286,435 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 8

Republican Joe Walsh, who was first elected to represent the 8th district in 2010, ran for re-election despite no longer living within the redrawn boundaries of the district. Walsh had initially decided to run in the redrawn 14th district.

### Republican primary

Walsh defeated write-in candidate Robert Canfield, a business owner who had planned to challenge him in the Republican primary before being removed from the ballot by the Illinois Board of Elections.

#### Candidates
##### Nominee

* Joe Walsh, incumbent U.S. Representative

##### Eliminated in primary

* Robert Canfield, business owner

##### Withdrawn

* Rick Veenstra, DuPage County assistant state attorney

##### Disqualified

* Rich Evans, accountant

##### Declined

* David Harris, state representative
* Craig Johnson, Mayor of Elk Grove Village
* Andrew Palomo, businessman
* Darlene Ruscitti, DuPage County Superintendent of Education

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Joe Walsh (incumbent) | 35,102 | 99.9 |
| | Republican | Robert Canfield (write-in) | 54 | 0.1 |
| Total votes | Total votes | Total votes | 35,156 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Tammy Duckworth, Iraq veteran, former official in the U.S. Department of Veterans Affairs and candidate for the 6th district in 2006

##### Eliminated in primary

* Raja Krishnamoorthi, former deputy state treasurer and candidate for Illinois Comptroller in 2010

##### Declined

* Melissa Bean, former U.S. Representative (endorsed Krishnamoorthi)

#### Endorsements

Organizations
* EMILY's List
* VoteVets
Newspapers
* Chicago Tribune
U.S. Representatives
* Melissa Bean, U.S. representative from Illinois's 8th congressional district (2005–2011)

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Tammy Duckworth | 17,097 | 66.2 |
| | Democratic | Raja Krishnamoorthi | 8,736 | 33.8 |
| Total votes | Total votes | Total votes | 25,833 | 100.0 |

### General election
#### Campaign

Walsh and Duckworth scheduled four debates. The first was held on May 12, 2012, on CLTV, the second on September 14 in West Dundee at Heritage Fest, the third on October 9 on WCPT and WIND at the Meadows Club in Rolling Meadows, open to 8th district residents. The fourth was held on October 18 on WTTW's Chicago Tonight.

#### Endorsements

Organizations
* FreedomWorks
* National Republican Congressional Committee "Patriot" Program
* National Right to Life Committee
* NRA Political Victory Fund
* Tea Party Express
* United States Chamber of Commerce
Labor unions
* AFL-CIO
* National Association of Letter Carriers
Organizations
* Democratic Congressional Campaign Committee "Red to Blue" Program
* EMILY's List
* Feminist Majority
* J Street
* NARAL Pro-Choice America
* National Organization for Women
* Planned Parenthood Action Fund
* Sierra Club
* Veterans' Alliance for Security and Democracy
* VoteVets
Newspapers
* Chicago Tribune
* Daily Herald

#### Debates

* Complete video of debate, October 18, 2012

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Joe Walsh (R) | Tammy Duckworth (D) | Undecided |
| We Ask America | October 28, 2012 | 1,010 (LV) | ± 3.1% | 45% | 55% | — |
| Public Policy Polling (D-CREDO) | October 25–26, 2012 | 500 (LV) | ± 4.4% | 40% | 54% | 5% |
| Chicago Tribune/WGN | October 20–24, 2012 | 600 (LV) | ± 4.0% | 40% | 50% | 9% |
| Anzalone-Liszt (D-LCV) | October 16–18, 2012 | 400 (LV) | ± 4.9% | 39% | 54% | 7% |
| DCCC (D) | October 4, 2012 | 315 (LV) | ± 5.5% | 42% | 52% | 6% |
| Public Policy Polling (D-League of Conservation Voters) | September 18–20, 2012 | 508 (LV) | ± 4.4% | 38% | 52% | 10% |
| Public Policy Polling (D-CREDO SuperPAC) | August 13–14, 2012 | 500 (LV) | ± 4.4% | 41% | 50% | 9% |

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Likely D (flip) | November 5, 2012 |
| Rothenberg | Likely D (flip) | November 2, 2012 |
| Roll Call | Lean D (flip) | November 4, 2012 |
| Sabato's Crystal Ball | Lean D (flip) | November 5, 2012 |
| NY Times | Lean D (flip) | November 4, 2012 |
| RCP | Likely D (flip) | November 4, 2012 |
| The Hill | Likely D (flip) | November 4, 2012 |

#### Results

Illinois's 8th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Tammy Duckworth | 123,206 | 54.7 |
| | Republican | Joe Walsh (incumbent) | 101,860 | 45.3 |
| Total votes | Total votes | Total votes | 225,066 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

## District 9

Democrat Jan Schakowsky, who had represented the 9th district since 1999, sought re-election.
Robert Dold, who was first elected to represent the 10th district in 2010, lives in the new 9th district, but sought re-election in the 10th.

### Democratic primary
#### Candidates
##### Nominee

* Jan Schakowsky, incumbent U.S. Representative

##### Eliminated in primary

* Simon Ribeiro, high school teacher and Green Party nominee for this seat in 2010

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jan Schakowsky (incumbent) | 48,124 | 91.9 |
| | Democratic | Simon Ribeiro | 4,270 | 8.1 |
| Total votes | Total votes | Total votes | 52,394 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Timothy Wolfe

##### Withdrawn

* Ron Wallace, Niles Township Republican Committeeman

##### Declined

* Robert Dold, incumbent U.S. Representative for the 10th district

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Timothy Wolfe | 32,043 | 100.0 |
| Total votes | Total votes | Total votes | 32,043 | 100.0 |

### General election
#### Endorsements

Labor unions
* AFL-CIO
* National Association of Letter Carriers
* National Education Association
* United Steelworkers
Organizations
* Feminist Majority
* Humane Society of the United States
* J Street
* NARAL Pro-Choice America
* National Organization for Women
* Planned Parenthood Action Fund
* Sierra Club
* Stonewall Democrats
Newspapers
* Chicago Tribune

#### Results

Illinois's 9th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jan Schakowsky (incumbent) | 194,869 | 66.3 |
| | Republican | Timothy Wolfe | 98,924 | 33.7 |
| | Independent | Hilaire Fuji Shioura (write-in) | 8 | 0.0 |
| | Independent | Susanne Atanus (write-in) | 6 | 0.0 |
| Total votes | Total votes | Total votes | 293,807 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 10

Bob Dold, who was first elected to represent the 10th district in 2010, sought re-election. Dold no longer lives in the redrawn district, but would move into the district if he won re-election.

### Republican primary
#### Candidates
##### Nominee

* Bob Dold, incumbent U.S. Representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Bob Dold (incumbent) | 36,647 | 100.0 |
| Total votes | Total votes | Total votes | 36,647 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Brad Schneider, management consultant

##### Eliminated in primary

* Vivek Bavda, attorney
* Ilya Sheyman, community organizer
* John Tree, business executive and Colonel in the U.S. Air Force Reserve

##### Withdrawn

* Bob McKenzie, lawyer

##### Disqualified

* Aloys Rutagwibira, mathematician and basketball coach

##### Declined

* Susan Garrett, state senator
* Carol Sente, state representative

#### Endorsements

Newspapers
* Chicago Tribune
Organizations
* Sierra Club
Organizations
* Veterans' Alliance for Security and Democracy

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Brad Schneider | 15,530 | 46.9 |
| | Democratic | Ilya Sheyman | 12,767 | 38.5 |
| | Democratic | John Tree | 2,938 | 8.9 |
| | Democratic | Vivek Bavda | 1,881 | 5.7 |
| | Democratic | Aloys Rutagwibira (write-in) | 8 | 0.0 |
| Total votes | Total votes | Total votes | 33,124 | 100.0 |

### General election
#### Endorsements

Labor unions
* National Education Association
Organizations
* GOProud
* Humane Society of the United States
* Log Cabin Republicans
* National Republican Congressional Committee "Patriot" Program
* United States Chamber of Commerce
Newspapers
* Chicago Tribune
Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Council for a Livable World
* Democratic Congressional Campaign Committee "Red to Blue" Program
* NARAL Pro-Choice America
* Sierra Club

#### Debates

* Complete video of debate, October 23, 2012

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Bob Dold (R) | Brad Schneider (D) | Undecided |
| We Ask America | October 28, 2012 | 1,257 | ± 2.8% | 46% | 54% | — |
| DCCC (D) | October 14, 2012 | 451 | ± 4.6% | 43% | 44% | 13% |
| Greenberg Quinlan Rosner Research (D-House Majority PAC)/SEIU) | August 8–12, 2012 | 400 | ± 4.9% | 46% | 46% | 8% |
| McLaughlin & Associates | June 20–21, 2012 | 400 | ± 4.9% | 42% | 32% | 26% |
| Normington, Petts & Associates | May 21–23, 2012 | 400 | ± 4.9% | 39% | 39% | 22% |

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Tossup | November 5, 2012 |
| Rothenberg | Tossup | November 2, 2012 |
| Roll Call | Tossup | November 4, 2012 |
| Sabato's Crystal Ball | Lean R | November 5, 2012 |
| NY Times | Lean D (flip) | November 4, 2012 |
| RCP | Tossup | November 4, 2012 |
| The Hill | Tossup | November 4, 2012 |

#### Results

Illinois's 10th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Brad Schneider | 133,890 | 50.6 |
| | Republican | Bob Dold (incumbent) | 130,564 | 49.4 |
| Total votes | Total votes | Total votes | 264,454 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

## District 11

The newly drawn 11th district is the successor to the old 13th district, which had been represented by Republican Judy Biggert since 1999. While the reconfigured district contains half of Biggert's former territory, it was made significantly more Democratic than before. It now includes the Democratic-leaning areas of Joliet and Aurora. Biggert's home in Hinsdale was drawn into the 6th district, but she sought reelection in this district.

### Republican primary

Biggert won the primary against nominal write-in opposition from Harris.

#### Candidates
##### Nominee

* Judy Biggert, incumbent U.S. Representative

##### Eliminated in primary

* Diane Harris, notary public

##### Disqualified

* Jack Cunningham, Kane County Clerk

##### Declined

* Chris Balkema, member of the Grundy County Board
* Richard Irvin, Aurora alderman
* Chris Lauzen, state senator (running for Kane County Board Chairman)

#### Endorsements

Organizations
* Eagle Forum

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Judy Biggert (incumbent) | 31,471 | 99.9 |
| | Republican | Diane Harris (write-in) | 37 | 0.1 |
| Total votes | Total votes | Total votes | 31,508 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Bill Foster, former U.S. Representative

##### Eliminated in primary

* James Hickey, president of the Orland Fire Protection District
* Juan Thomas, former Aurora Township clerk

##### Declined

* John Atkinson, Insurance executive and health care activist
* Linda Chapa LaVia, state representative
* Linda Holmes, state senator

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bill Foster | 12,126 | 58.5 |
| | Democratic | Juan Thomas | 5,212 | 25.1 |
| | Democratic | Jim Hickey | 3,399 | 16.4 |
| Total votes | Total votes | Total votes | 20,737 | 100.0 |

### General election
#### Endorsements

Labor unions
* National Education Association
Organizations
* GOProud
* Log Cabin Republicans
* Maggie's List
* National Republican Congressional Committee "Patriot" Program
* NRA Political Victory Fund
* United States Chamber of Commerce
Newspapers
* Chicago Tribune
Labor unions
* AFL-CIO
* National Association of Letter Carriers
* United Steelworkers
Organizations
* Democratic Congressional Campaign Committee "Red to Blue" Program
* J Street
* NARAL Pro-Choice America
* Sierra Club

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Judy Biggert (R) | Bill Foster (D) | Undecided |
| We Ask America | October 28, 2012 | 1,303 | ± 2.7% | 50% | 50% | — |
| Garin-Hart-Yang (D-House Majority PAC) | October 16–18, 2012 | 402 | ± 4.9% | 45% | 49% | 6% |
| Global Strategy Group (D-Foster) | August 27–29, 2012 | 400 | ± 4.9% | 43% | 42% | 15% |

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Tossup | November 5, 2012 |
| Rothenberg | Tossup | November 2, 2012 |
| Roll Call | Tossup | November 4, 2012 |
| Sabato's Crystal Ball | Lean D (flip) | November 5, 2012 |
| NY Times | Lean D (flip) | November 4, 2012 |
| RCP | Lean D (flip) | November 4, 2012 |
| The Hill | Lean D (flip) | November 4, 2012 |

#### Results

Illinois's 11th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bill Foster | 148,928 | 58.6 |
| | Republican | Judy Biggert (incumbent) | 105,348 | 41.4 |
| | Independent | Chris Michel (write-in) | 19 | 0.0 |
| Total votes | Total votes | Total votes | 254,295 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

## District 12

Democrat Jerry Costello, who had represented the 12th district since 1988, decided to retire rather than run for re-election.

### Democratic primary
#### Candidates
##### Nominee

* Brad Harriman, St. Clair County Regional Superintendent

##### Eliminated in primary

* Kenneth Wiezer, retired carpenter

##### Withdrawn

* Chris Miller, Illinois political director of the Truman National Security Project and Iraq War U.S. Army veteran

##### Declined

* John Baricevic, St. Clair County Chief Judge
* John E. Bradley, state representative
* Ann Callis, Madison County Chief Judge
* James Clayborne, Jr., state senator
* Jerry Costello, incumbent U.S. Representative
* Jerry Costello II, state representative and Jerry Costello's eldest son
* Bill Haine, state senator
* Jay C. Hoffman, former state representative
* Tom Holbrook, state representative
* Brendan Kelly, St. Clair County State's Attorney
* Mark Kern, St. Clair County Board Chairman
* Matt Melucci, Madison County Circuit Clerk
* Sheila Simon, incumbent Lieutenant Governor

#### Campaign

Miller ended his campaign in February 2012 and endorsed Harriman (but remained on the primary ballot).

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Brad Harriman | 27,409 | 69.8 |
| | Democratic | Chris Miller | 8,874 | 22.6 |
| | Democratic | Kenneth Wiezer | 2,967 | 7.6 |
| Total votes | Total votes | Total votes | 39,250 | 100.0 |
In May 2012, Harriman dropped out of the race because of an illness; that left the decision of whom to name as a replacement candidate up to a committee that included the 12 Democratic county chairmen in the district and Rep. Costello. The committee unanimously selected Major General (ret.) and Adjutant General of Illinois William Enyart as the replacement nominee on June 23.

### Republican primary
#### Candidates
##### Nominee

* Jason Plummer, chairman of the Madison County Republican Party and nominee for lieutenant governor in 2010

##### Eliminated in primary

* Rodger Cook, former mayor of Belleville
* Theresa Kormos, nurse and candidate for this seat in 2010

##### Disqualified

* Teri Newman, businesswoman and nominee for this seat in 2010

##### Declined

* Mike Bost, state representative

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Jason Plummer | 25,280 | 55.7 |
| | Republican | Rodger Cook | 16,313 | 35.9 |
| | Republican | Theresa Kormos | 3,811 | 8.4 |
| Total votes | Total votes | Total votes | 45,404 | 100.0 |

### Green primary

Paula Bradshaw, a registered nurse, ran as the Green Party nominee.

### Independents

Retha Daugherty, a small-business owner and resident of Carbondale, had announced her intentions to be on the ballot as an independent candidate, but had to drop her bid in April 2012 because of a change in state election law.

### General election
#### Endorsements

Labor unions
* National Association of Letter Carriers
* National Education Association
* United Steelworkers
Organizations
* Democratic Congressional Campaign Committee "Red to Blue" Program
Newspapers
* Chicago Tribune
Organizations
* FreedomWorks
* Gun Owners of America
* National Republican Congressional Committee "Young Guns" Program
* National Right to Life Committee
* United States Chamber of Commerce

#### Debates

* Complete video of debate, September 20, 2012

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Bill Enyart (D) | Jason Plummer (R) | Paula Bradshaw (G) | Undecided |
| We Ask America | October 28, 2012 | 1,313 | ± 2.7% | 51% | 46% | 4% | — |
| Benenson (D-House Majority PAC) | September 11–13, 2012 | 400 | ± 4.9% | 49% | 41% | — | 10% |
| Public Opinion Strategies | August 1–2, 2012 | 400 | ± 4.9% | 28% | 45% | — | 27% |
| We Ask America | July 9, 2012 | 1,510 | ± 2.5% | 34% | 45% | — | 21% |

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Tossup | November 5, 2012 |
| Rothenberg | Tossup | November 2, 2012 |
| Roll Call | Lean D | November 4, 2012 |
| Sabato's Crystal Ball | Tossup | November 5, 2012 |
| NY Times | Tossup | November 4, 2012 |
| RCP | Tossup | November 4, 2012 |
| The Hill | Tossup | November 4, 2012 |

#### Results

Illinois's 12th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | William Enyart | 157,000 | 51.7 |
| | Republican | Jason Plummer | 129,902 | 42.7 |
| | Green | Paula Bradshaw | 17,045 | 5.6 |
| | Independent | Shon-Tiyon Horton (write-in) | 2 | 0.0 |
| Total votes | Total votes | Total votes | 303,947 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 13

The new 13th is the successor to the old 15th District, represented by Republican Tim Johnson since 2001.

### Republican primary
#### Candidates
##### Nominee

* Tim Johnson, incumbent U.S. Representative

##### Eliminated in primary

* Michael Firsching, veterinarian
* Frank Metzger, retired ironworker

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Tim Johnson (incumbent) | 35,655 | 68.7 |
| | Republican | Frank Metzger | 9,571 | 18.4 |
| | Republican | Michael Firsching | 6,706 | 12.9 |
| Total votes | Total votes | Total votes | 51,932 | 100.0 |

### Republican convention

Although Johnson won the primary, in April 2012, he chose to retire rather than seek re-election. A convention was held on May 19, 2012, to choose a replacement nominee. The 14 GOP county chairmen in the district unanimously selected Rodney Davis as the party nominee.

#### Candidates
##### Nominee

* Rodney L. Davis, aide to U.S. Representative John Shimkus

##### Eliminated at the convention

* Jerry Clarke, chief of staff to U.S. Representative Randy Hultgren and Johnson's former chief of staff
* Erika Harold, lawyer and 2003 Miss America
* Kathy Wassink, businesswoman.

##### Declined

* Jason Barickman, state representative
* Phil Bloomer, Johnson's communications director
* Bill Brady, state senator and nominee for governor in 2010
* Dan Brady, state representative
* Adam Brown, state representative
* Sam McCann, state senator
* Kyle McCarter, state senator
* Duane Noland, former state senator
* Chapin Rose, state representative
* Mark Shelden, Johnson's current chief of staff
* Mike Tate, CEO of the Independent Insurance Agents of Illinois and former state Representative
* Jim Watson, state representative

### Democratic primary
#### Candidates
##### Nominee

* David Gill, physician and nominee for the 15th district in 2004, 2006 and 2010

##### Eliminated in primary

* Matt Goetten, Greene County State attorney

##### Withdrawn

* James Gray, retired school administrator

##### Declined

* Mike Frerichs, state senator
* Jay Hoffman, former state representative
* Mark N. Lee, labor lawyer
* Brendan McGinty, Champaign County Board member

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | David Gill | 15,536 | 50.3 |
| | Democratic | Matt Goetten | 15,373 | 49.7 |
| Total votes | Total votes | Total votes | 30,909 | 100.0 |

### Independent

John Hartman, a medical technology company CFO, ran as an independent candidate.

### General election
#### Endorsements

Organizations
* National Republican Congressional Committee "Young Guns" Program
* National Right to Life Committee
* NRA Political Victory Fund
* United States Chamber of Commerce
Newspapers
* Chicago Tribune
Labor unions
* AFL-CIO
* National Association of Letter Carriers
* National Education Association
* United Steelworkers
Organizations
* Citizens for Global Solutions
* Council for a Livable World
* Democracy for America
* Democratic Congressional Campaign Committee "Red to Blue" Program
* Feminist Majority
* NARAL Pro-Choice America
* National Organization for Women
* Planned Parenthood Action Fund
* Progressive Change Campaign Committee
* Progressive Democrats of America
* Sierra Club

#### Debates

* Complete video of debate, October 17, 2012

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Rodney Davis (R) | David Gill (D) | John Hartman (I) | Undecided |
| We Ask America | October 28, 2012 | 1,360 (LV) | ± 2.7% | 50% | 45% | 4% | 1% |
| Anzalone-Liszt (D-DCCC) | October 18–21, 2012 | 400 (LV) | ± 4.9% | 39% | 48% | – | 13% |
| DCCC (D) | October 11–12, 2012 | 458 (LV) | ± 4.6% | 37% | 43% | 7% | 13% |
| Victoria Research (D-Gill) | September 26–27, 2012 | 400 (LV) | ± 4.9% | 39% | 40% | 8% | 13% |
| Victoria Research (D-Gill) | August 4–7, 2012 | 400 (LV) | ± 4.9% | 30% | 36% | 9% | 25% |
| We Ask America | June 7, 2012 | 1,299 (LV) | ± 2.8% | 47% | 38% | — | 15% |
| Victoria Research (D-Gill) | April 11–13, 2012 | 400 (RV) | ± 4.9% | 31% | 41% | — | 28% |
With Jerry Clarke
| Poll source | Date(s) administered | Sample size | Margin of error | Jerry Clarke (R) | David Gill (D) | Undecided |
| Victoria Research (D-Gill) | April 11–13, 2012 | 400 (RV) | ± 4.9% | 33% | 40% | 17% |
With Generic Democratic
| Poll source | Date(s) administered | Sample size | Margin of error | Generic Republican (R) | Generic Democrat (D) | Undecided |
| Victoria Research (D-Gill) | April 11–13, 2012 | 400 (RV) | ± 4.9% | 35% | 38% | 27% |

#### Results

Illinois's 13th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | Rodney L. Davis | 137,034 | 46.6 |
| | Democratic | David Gill | 136,032 | 46.2 |
| | Independent | John Hartman | 21,319 | 7.2 |
| Total votes | Total votes | Total votes | 294,385 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 14

The redrawn 14th district includes McHenry County and parts of DuPage, Kane, Kendall, Lake, and Will counties. Republican Randy Hultgren, who was first elected to represent the 14th district in 2010, ran for re-election.

### Republican primary
#### Candidates
##### Nominee

* Randy Hultgren, incumbent U.S. Representative

##### Declined

* Joe Walsh, incumbent U.S. Representative for the 8th district

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Randy Hultgren (incumbent) | 64,419 | 100.0 |
| | Republican | Mark Mastrogiovanni (write-in) | 1 | 0.0 |
| Total votes | Total votes | Total votes | 64,420 | 100.0 |

### Democratic primary

Bill Foster, a Democrat who represented the 14th district from 2008 until 2011, decided to run in the 11th district in 2012, although some Illinois General Assembly leaders had hoped he would run in the 14th district, where his home is located.

#### Candidates
##### Nominee

* Dennis Anderson, public health researcher and International Breast Cancer Research Foundation trustee

##### Eliminated in primary

* Jonathan Farnick, computer support technician

##### Declined

* Jack Franks, state representative
* Frank McClatchey, former McHenry alderman and former chairman of the McHenry County

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Anderson | 9,344 | 74.2 |
| | Democratic | Jonathan Farnick | 3,258 | 25.8 |
| Total votes | Total votes | Total votes | 12,602 | 100.0 |

### General election
#### Endorsements

Organizations
* Campaign for Working Families
* National Right to Life Committee
* NRA Political Victory Fund
* United States Chamber of Commerce
Labor unions
* AFL-CIO
* United Steelworkers

#### Results

Illinois's 14th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | Randy Hultgren (incumbent) | 177,603 | 58.8 |
| | Democratic | Dennis Anderson | 124,351 | 41.2 |
| Total votes | Total votes | Total votes | 301,954 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 15

Republican John Shimkus, who had represented the now-obsolete 19th district since 2003 and represented the 20th district (eliminated after redistricting following the 2000 census) from 1997 until 2003, sought re-election in the new 15th district.

### Republican primary
#### Candidates
##### Nominee

* John Shimkus, incumbent U.S. Representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | John M. Shimkus (incumbent) | 66,709 | 100.0 |
| Total votes | Total votes | Total votes | 66,709 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Angela Michael, retired nurse

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Angela Michael | 16,831 | 100.0 |
| Total votes | Total votes | Total votes | 16,831 | 100.0 |

### General election
#### Endorsements

Labor unions
* National Association of Letter Carriers
Organizations
* National Right to Life Committee
* NRA Political Victory Fund
* United States Chamber of Commerce

#### Results

Illinois's 15th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Shimkus (incumbent) | 205,775 | 68.6 |
| | Democratic | Angela Michael | 94,162 | 31.4 |
| Total votes | Total votes | Total votes | 299,937 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 16

In redistricting, the 16th district was moved south to incorporate Livingston and Iroquois counties and parts of Ford County. Republican U.S. Representatives Adam Kinzinger, who had represented the 11th district since January 2011, and Don Manzullo, who had represented the 16th district since 1993, sought re-election in the new 16th district.

### Republican primary
#### Candidates
##### Nominee

* Adam Kinzinger, incumbent U.S. Representative from the 11th district

##### Eliminated in primary

* Don Manzullo, incumbent U.S. Representative

##### Declined

* Frank Gambino, majority leader of the Winnebago County Board; he announced in September 2011 that he would instead run for the Illinois Senate

#### Endorsements

Newspapers
* Chicago Tribune
Organizations
* Eagle Forum
* Family Research Council

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Adam Kinzinger | Don Manzullo | Undecided |
| We Ask America | March 11–12, 2012 | 1,605 | ± 2.44% | 42% | 43% | 15% |
| We Ask America | February 19–20, 2012 | 1,395 | ± 2.62% | 47% | 34% | 19% |

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Adam Kinzinger (incumbent) | 45,546 | 53.9 |
| | Republican | Don Manzullo (Incumbent) | 38,889 | 46.1 |
| Total votes | Total votes | Total votes | 84,435 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Wanda Rohl, social worker

### Independents

Bronco Bojovic, a businessman, had planned to run as an Independent candidate but dropped out of the race in February 2012.

### General election
#### Endorsements

Organizations
* Campaign for Working Families
* National Right to Life Committee
* NRA Political Victory Fund
* United States Chamber of Commerce

#### Results

Illinois's 16th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | Adam Kinzinger (incumbent) | 181,789 | 61.8 |
| | Democratic | Wanda Rohl | 112,301 | 38.2 |
| Total votes | Total votes | Total votes | 294,090 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 17

The 17th district, based in Rock Island and Moline, was extended to include most of Rockford and the more Democratic areas of Peoria and Tazewell County, thereby making it more favorable to Democrats. Republican Bobby Schilling, who had represented the district since January 2011, ran for re-election.

### Republican primary
#### Candidates
##### Nominee

* Bobby Schilling, incumbent U.S. Representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Bobby Schilling (incumbent) | 46,263 | 100.0 |
| Total votes | Total votes | Total votes | 46,623 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Cheri Bustos, East Moline alderwoman

##### Eliminated in primary

* Greg Aguilar, director of multicultural services at Augustana College
* George Gaulrapp, Mayor of Freeport

##### Withdrawn

* Eric Reyes, attorney

##### Declined

* Mike Boland, former state representative
* Phil Hare, former U.S. Representative
* Dave Koehler, state senator
* Porter McNeill, activist
* Mark Schwiebert, former mayor of Rock Island

#### Endorsements

Newspapers
* Chicago Tribune

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Cheri Bustos | 18,652 | 54.4 |
| | Democratic | George Gaulrupp | 8,838 | 25.8 |
| | Democratic | Greg Aguilar | 6,798 | 19.8 |
| Total votes | Total votes | Total votes | 34,288 | 100.0 |

### General election
#### Endorsements

Organizations
* National Republican Congressional Committee "Patriot" Program
* National Right to Life Committee
* NRA Political Victory Fund
* Susan B. Anthony List
* Tea Party Express
* United States Chamber of Commerce
Newspapers
* Chicago Tribune
Labor unions
* AFL-CIO
* National Association of Letter Carriers
* National Education Association
* United Steelworkers
Organizations
* Council for a Livable World
* Democratic Congressional Campaign Committee "Red to Blue" Program
* EMILY's List
* Feminist Majority
* J Street
* NARAL Pro-Choice America
* National Organization for Women
* Planned Parenthood Action Fund
* Sierra Club

#### Debates

* Complete video of debate, October 25, 2012

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Bobby Schilling (R) | Cheri Bustos (D) | Undecided |
| We Ask America | October 28, 2012 | 1,325 (LV) | ± 2.8% | 52% | 48% | - |
| GBA Strategies (D-Bustos) | October 16–18, 2012 | 450 (LV) | ± 4.6% | 45% | 49% | 9% |
| Public Opinion Strategies (R-Schilling) | October 14–15, 2012 | 400 (LV) | ± 4.9% | 51% | 44% | 5% |
| We Ask America | October 9, 2012 | 1,183 (LV) | ± 2.9% | 46% | 46% | 8% |
| Anzalone Liszt Research (D-DCCC) | October 2–4, 2012 | 400 (LV) | ± 4.9% | 44% | 45% | 11% |
| GBA Strategies (D-Bustos) | September 24–26, 2012 | 600 (LV) | ± 4.0% | 47% | 45% | 8% |
| Public Opinion Strategies (R-Schilling) | August 8–9, 2012 | 400 (LV) | ± 4.9% | 50% | 37% | 13% |
| Public Opinion Strategies (R-Schilling) | May 20–22, 2012 | 400 (LV) | ± 4.9% | 51% | 35% | 14% |
| GBA Strategies (D-Bustos) | January 29–February 1, 2012 | 400 (LV) | ± 4.0% | 44% | 35% | 21% |

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Tossup | November 5, 2012 |
| Rothenberg | Tossup | November 2, 2012 |
| Roll Call | Tossup | November 4, 2012 |
| Sabato's Crystal Ball | Lean D (flip) | November 5, 2012 |
| NY Times | Lean D (flip) | November 4, 2012 |
| RCP | Tossup | November 4, 2012 |
| The Hill | Lean D (flip) | November 4, 2012 |

#### Results

Illinois's 17th congressional district election results, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Cheri Bustos | 153,519 | 53.3 |
| | Republican | Bobby Schilling (incumbent) | 134,623 | 46.7 |
| | Independent | Eric Reyes (write-in) | 10 | 0.0 |
| | Independent | Joe Faber (write-in) | 9 | 0.0 |
| Total votes | Total votes | Total votes | 288,161 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

## District 18

Republican Aaron Schock, who had represented the 18th district since 2009, ran for and won re-election. The district was one of two which were expected to remain strongly favorable to Republicans. Peoria's more Democratic southern portion was shifted to the 17th district, and was replaced by the heavily Republican Bloomington-Normal and Quincy areas.

### Republican primary
#### Candidates
##### Nominee

* Aaron Schock, incumbent U.S. Representative

##### Disqualified

* Darrel Miller, farmer; removed from the ballot by the Illinois Board of Elections in February 2012

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Aaron Schock (incumbent) | 87,441 | 100.0 |
| Total votes | Total votes | Total votes | 87,441 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Steve Waterworth, farmer and former master sergeant in the Air Force and Air National Guard

##### Eliminated in primary

* Matthew Woodmancy, restaurant manager

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Steve Waterworth | 10,211 | 69.6 |
| | Democratic | Matthew Woodmancy | 4,465 | 30.4 |
| Total votes | Total votes | Total votes | 14,676 | 100.0 |

### General election
#### Endorsements

Labor unions
* National Association of Letter Carriers
* National Education Association
Organizations
* Campaign for Working Families
* National Right to Life Committee
* NRA Political Victory Fund
* United States Chamber of Commerce
Labor unions
* AFL-CIO
* United Steelworkers

#### Results

Illinois's 18th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | Aaron Schock (incumbent) | 244,467 | 74.2 |
| | Democratic | Steve Waterworth | 85,164 | 25.8 |
| Total votes | Total votes | Total votes | 329,631 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |